Android解析Plist文件

Posted 2023-02-16

【中文标题】Android解析Plist文件

【英文标题】：Android parse Plist file

【发布时间】：2014-07-02 05:23:07

【问题描述】：

您好，我正在尝试解析包含 dict 数组的 plist 文件。我试图使用xmlwise 来做到这一点。 plistfile的内容是here

到目前为止，我的活动中只有这个，并且我正在获取 plistfile 的内容，但是如何将内容解析为 arraylist？

Map<String, Object> properties = null;
try 
    InputStream inputStream = getResources().openRawResource(R.raw.first_5);
    BufferedReader br = null;
    try 
        br = new BufferedReader(new InputStreamReader(inputStream));
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = br.readLine()) != null) 
            sb.append(line);
        
        properties = Plist.fromXml(sb.toString());
        // TODO do something with the object here
        Log.v("--", properties.values() + " " + properties.size());
        Log.v("--", "OB "+properties.get());
     catch (Exception e) 
        e.printStackTrace();
     finally 
        br.close();
    

【问题讨论】：

查看现有库code.google.com/p/plist/source/checkout

谢谢，我去看看

【参考方案1】：

快速提问。 ArrayList 的内容应该是什么？我想知道您是否在Map<String, Object> properties 地图中提到了Object 列表，那么为什么您不能从地图中获取值作为

Map<String, Object> properties = new HashMap<String, Object>();
List<Object> plist = new ArrayList<Object>(properties.values());

除了检查您的 plist 之外，该结构就像一个字典根元素和其中的字典列表。我假设您需要将此作为列表。如果是这样，请考虑使用 longevitysoft 的android PList parser。这是简单且开源的。它基本上是一个 SAXParser 解析 Apple PList。

然后您可以遍历这个数组并获得合适的对象。在你的 xml 它和字典对象数组中，所以你可以做这样的事情

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

import com.longevitysoft.android.xml.plist.PListXMLHandler;
import com.longevitysoft.android.xml.plist.PListXMLParser;
import com.longevitysoft.android.xml.plist.domain.Array;
import com.longevitysoft.android.xml.plist.domain.Dict;
import com.longevitysoft.android.xml.plist.domain.PList;
import com.longevitysoft.android.xml.plist.domain.PListObject;

public class PlistReader 

    public static void main(String[] args) throws Exception 
        PListXMLParser parser = new PListXMLParser();
        PListXMLHandler handler = new PListXMLHandler();
        parser.setHandler(handler);
        parser.parse(readFile("plist.xml"));
        PList pList = ((PListXMLHandler) parser.getHandler()).getPlist();
        Dict root = (Dict) pList.getRootElement();
        // This Array class is java.util.ArrayList<PListObject> underneath the
        // covers
        Array theList = root.getConfigurationArray("Objects");
        for (PListObject obj : theList) 
            switch (obj.getType()) 
                case DICT:
                    Dict dictionaryObj = (Dict) obj;
                    // dictionaryObj.getConfigurationObject(key);
                    // dictionaryObj.getConfigurationInteger(key);
                    // dictionaryObj.getConfiguration(key);
                    // dictionaryObj.getConfigurationArray(key)
                    break;

                case STRING:
                    com.longevitysoft.android.xml.plist.domain.String stringObj = (com.longevitysoft.android.xml.plist.domain.String) obj;
                    break;

                default:
                    break;
            
        
    

    private static String readFile(String path) throws IOException 
        byte[] encoded = Files.readAllBytes(Paths.get(path));
        return new String(encoded);
    

当我尝试解析您的 xml 时，我遇到了一些异常。那是因为 PListXMLHandler 正在检查 localName 而不是qualifiedName。这可以通过检查 startElement() 和 endElement() 方法中的 localName 来轻松解决。

if(isEmpty(localName))
    localName = qName;

希望这会有所帮助。

【讨论】：

这一行的Paths类在哪里得到Paths.get(path)

哦，那是一个输入流，现在主要问题是如何从这些值中创建对象？你也可以帮我吗？

对不起。错过了这个问题。更新了答案中的代码。您可以只遍历对象数组，然后将其转换为适当的类型并做任何您想做的事情。基本上，这些类型将是 ARRAY、DATA、DATE、DICT、REAL、INTEGER、STRING、TRUE 或 FALSE。所以每个对象都有适当的方法来从中提取价值。

【参考方案2】：

您也可以尝试使用 Google dd-plist.jar 库或 SAXON parse 来解析 plist。

完成这个转换：

https://code.google.com/p/plist/wiki/Examples http://developer.android.com/reference/javax/xml/parsers/SAXParser.html

您可以使用 dd-plist jar 来执行此操作，从 Google 下载 dd-plist.jar 又快又好。

我从 Google 代码列中举了一个对我有用的示例。 链接在这里。 http://plist.googlecode.com/svn-history/r61/trunk/src/com/dd/plist/XMLPropertyListParser.java

package com.dd.plist.test;

import com.dd.plist.*;
import java.io.File;
import java.util.Arrays;
import java.util.Date;
import junit.framework.TestCase;

public class ParseTest extends TestCase 

    /**
     * Test the xml reader/writer
     */
    public static void testXml() throws Exception 
        System.out.println(new File("test-files/"));

        // parse an example plist file
        NSObject x = PropertyListParser.parse(new File("test-files/test1.plist"));

        // check the data in it
        NSDictionary d = (NSDictionary)x;
        assertTrue(d.count() == 5);
        assertTrue(((NSString)d.objectForKey("keyA")).toString().equals("valueA"));
        assertTrue(((NSString)d.objectForKey("key&B")).toString().equals("value&B"));
        assertTrue(((NSDate)d.objectForKey("date")).getDate().equals(new Date(1322472090000L)));
        assertTrue(Arrays.equals(((NSData)d.objectForKey("data")).bytes(),
                                 new byte[]0x00,0x00,0x00,0x04,0x10,0x41,0x08,0x20,(byte)0x82));
        NSArray a = (NSArray)d.objectForKey("array");
        assertTrue(a.count() == 4);
        assertTrue(a.objectAtIndex(0).equals(new NSNumber(true)));
        assertTrue(a.objectAtIndex(1).equals(new NSNumber(false)));
        assertTrue(a.objectAtIndex(2).equals(new NSNumber(87)));
        assertTrue(a.objectAtIndex(3).equals(new NSNumber(3.14159)));

        // read/write it, make sure we get the same thing
        PropertyListParser.saveAsXML(x, new File("test-files/out-testXml.plist"));
        NSObject y = PropertyListParser.parse(new File("test-files/out-testXml.plist"));
        assertTrue(x.equals(y));
    

    /**
     *  Test the binary reader/writer.
     */
    public static void testBinary() throws Exception 
        NSObject x = PropertyListParser.parse(new File("test-files/test1.plist"));

        // save and load as binary
        PropertyListParser.saveAsBinary(x, new File("test-files/out-testBinary.plist"));
        NSObject y = PropertyListParser.parse(new File("test-files/out-testBinary.plist"));
        assertTrue(x.equals(y));
    

    /**
     *  NSSet only occurs in binary property lists, so we have to test it separately.
     */
    public static void testSet() throws Exception 
        NSSet s = new NSSet();
        s.addObject(new NSNumber(1));
        s.addObject(new NSNumber(2));
        s.addObject(new NSNumber(3));

        PropertyListParser.saveAsBinary(s, new File("test-files/out-testSet.plist"));
        NSObject t = PropertyListParser.parse(new File("test-files/out-testSet.plist"));
        assertTrue(s.equals(t));
    

    public static void testASCII() throws Exception 
        NSObject x = PropertyListParser.parse(new File("test-files/test1-ascii.plist"));
        NSDictionary d = (NSDictionary)x;        
        assertTrue(d.count() == 5);        
        assertTrue(((NSString)d.objectForKey("keyA")).toString().equals("valueA"));
        assertTrue(((NSString)d.objectForKey("key&B")).toString().equals("value&B"));
        assertTrue(((NSDate)d.objectForKey("date")).getDate().equals(new Date(1322472090000L)));
        assertTrue(Arrays.equals(((NSData)d.objectForKey("data")).bytes(),
                                 new byte[]0x00,0x00,0x00,0x04,0x10,0x41,0x08,0x20,(byte)0x82));
        NSArray a = (NSArray)d.objectForKey("array");
        assertTrue(a.count() == 4);
        assertTrue(a.objectAtIndex(0).equals(new NSNumber(true)));
        assertTrue(a.objectAtIndex(1).equals(new NSNumber(false)));
        assertTrue(a.objectAtIndex(2).equals(new NSNumber(87)));
        assertTrue(a.objectAtIndex(3).equals(new NSNumber(3.14159)));
        NSObject y = PropertyListParser.parse(new File("test-files/test1-ascii-gnustep.plist"));
        assertTrue(x.equals(y));
    

    public static void testASCIIWriting() throws Exception 
        File in = new File("test-files/test1.plist");
        File out = new File("test-files/out-test1-ascii.plist");
        NSDictionary x = (NSDictionary)PropertyListParser.parse(in);
        PropertyListParser.saveAsASCII(x, out);
        NSDictionary y = (NSDictionary)PropertyListParser.parse(out);
        assertTrue(x.equals(y));
    

    public static void testGnuStepASCIIWriting() throws Exception 
        File in = new File("test-files/test1.plist");
        File out = new File("test-files/out-test1-ascii-gnustep.plist");
        NSDictionary x = (NSDictionary)PropertyListParser.parse(in);
        PropertyListParser.saveAsGnuStepASCII(x, out);
        NSObject y = PropertyListParser.parse(out);
        assertTrue(x.equals(y));